Accept the power of core blanks. ``I want a Harris that can handle the power of Shimano Iso rods equipped with core blanks.'' In order to respond to that request, we adopted high-purity fluorocarbon. It exhibits excellent linear force and abrasion resistance, and is resistant to wear and color changes over time. Although the manufacturing method is difficult, it uses high-purity fluorocarbon to achieve a high level of balance between transparency and hardness. Furthermore, we use "soft winding", so you can enjoy the characteristics of the thread as it is. ●Succeeded in achieving high purity with a balance between transparency and hardness. ●Excellent linear strength and wear resistance. ●It is less likely that the color will change due to wear and tear over time. ● Adopts soft winding, so there is little winding curl and does not interfere with the original softness and strength of Harris. - Comes with a line band that can stop the thread anywhere